Drain for utility sink

Old 07-25-04, 04:16 PM
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Drain for utility sink

I am installing a utility sink in my basement, but I have a question about the drainage for it.
THe sink will be installed next to the main drain line for the house and the lowest spot I can attach an extension piece is about 30" off the ground, the drain from the sink currently is 12" lower than that.

My question is, do I need to raise the sink 12" off the ground so that the water can travel in a downward direction, or if I leave everything as is, will the water travel up to enter the main drain line?

Thanks in advance
Old 07-25-04, 05:31 PM
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Drain Height

You will need to either raise your sink more than 12" above it's current position because having the drain at equal height with the main waste line is no proper for drainage slope.

The better option for a situation like this is to install a sewage ejector into the floor into which the waste line from the sink flows. The sewage ejector then pumps the waste water vertically into the main drain pipe where it will flow with gravity out of your house.
Old 07-26-04, 12:09 PM
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If I installed an injector, I would have to drill a hole into the concrete floor. Maybe it would be best to just raise the sink and build a step up, it's only a utility sink, to be placed in my furnace room.

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